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# Description:
# Playing with Drush integration. Simple implementation of informational drush commands, and a base
# interface for further drush command integration.
# Dependencies:
# None
# Configuration:
# The hubot user will need permissions to run drush on the server that it is installed on.
# If the site aliases are to remote servers (likely the case) then the hubot user will also need
# ssh keys setup in order to access these sites.
# Notes:
# It would have been easier and more elegant to simply allow the user to funnel drush commands directly
# to the spawn method; however, being that is a colossal security risk, I opted to limit the commands that
# can be executed as well as the options provided to those commands. By default this is limited to
# relatively harmless "info" commands.
# Commands:
# hubot drush sa - show the list of available sites ( --update-aliases will refresh this list )
# hubot drush rq - show pending core requirements at a warning level or above
# hubot drush <site alias> cc - Clears "all" cache for a given site alias.
# hubot drush <site alias> pml - Lists the site modules ( "enabled" and "non-core" by default this can be changed with --disbaled or --core )
# hubot drush <site alias> pmi <module/theme> - Show detailed info about a module or theme
# hubot drush <site alias> uinf <user> - Display information about the user specified by uid, email, or username
# hubot drush <site alias> ws - Show the 10 most recent watchdog messages
# hubot drush <site alias> vget <variable name> - Show the value of a given variable
# Author:
# rh0
spawn = require("child_process").spawn
drush_interface = ->
site_aliases = []
# helper method to propagate the site aliases in memory
update_aliases = (msg) ->
output = ''
raw_aliases = ''
fetch_aliases = spawn("drush", ["sa"])
fetch_aliases.stdout.on "data", (data) ->
raw_aliases += data
fetch_aliases.stderr.on "data", (data) ->
output = "Update experienced an error: " + data
fetch_aliases.on "exit", (code) ->
if code is 0
site_aliases = raw_aliases.split('\n')
output = "Alias update complete."
unless msg is `undefined`
msg.send output
# run the update script
# generalized spawn method
execute_drush = (msg, drush_args) ->
output = ''
msg.send "This may take a moment..."
drush_spawn = spawn("drush", drush_args)
drush_spawn.stdout.on "data", (data) ->
output += data
drush_spawn.stderr.on "data", (data) ->
output += data
drush_spawn.on "exit", (code) ->
output += "Command complete."
msg.send output
# the commands that we are allowing drush to execute
# NOTE: If you decide to augment the commands here please carefully consider what you are opening to the people
# interacting with hubot.
allowed_commands =
drush_sa: (msg, command) ->
if command.args.indexOf('--update-aliases') is -1
msg.send "If this list is empty or has unexpected results update aliases ('drush sa --update-aliases')."
msg.send "Aliases we have in memory:\n" + site_aliases.join("\n")
msg.send "Updating aliases..."
drush_cc: (msg, command) ->
execute_drush(msg, [command.alias, "cc", "all"])
drush_rq: (msg, command) ->
execute_drush(msg, [command.alias, "rq", "--severity=1"])
drush_pml: (msg, command) ->
allowed_options = ["--status=enabled", "--status=disabled", "--no-core", "--core"]
filtered_options = command.args.filter((elem) ->
allowed_options.indexOf(elem) isnt -1
filtered_options.unshift(command.alias, "pml")
execute_drush(msg, filtered_options)
drush_uinf: (msg, command) ->
user_search = command.args.shift()
execute_drush(msg, [command.alias, "uinf", user_search])
drush_pmi: (msg, command) ->
extension_search = command.args.shift()
execute_drush(msg, [command.alias, "pmi", extension_search])
drush_ws: (msg, command) ->
allowed_options = ["--full"]
filtered_options = command.args.filter((elem) ->
allowed_options.indexOf(elem) isnt -1
filtered_options.unshift(command.alias, "ws")
execute_drush(msg, filtered_options)
drush_vget: (msg, command) ->
variable_search = command.args.shift()
# forcing this to --exact to prevent channel flood from a huge search
execute_drush(msg, [command.alias, "vget", variable_search, "--exact"])
# verify alias before firing the command, saves us time on waiting for an err from drush
verify_alias = (check_alias) ->
if site_aliases.indexOf(check_alias) is -1
# parsing the user input after "drush "
parse_command = (user_command) ->
extra_args = user_command.split(' ')
site_alias = extra_args.shift()
command_suff = ''
if site_alias.charAt(0) is "@"
unless verify_alias(site_alias.slice(1)) is false
command_suff = extra_args.shift()
# Kind of gross but the site-alias command is the only one that does not need a site alias
# so let's check before we fire up drush to fail.
else unless site_alias is "sa"
command_suff = site_alias
site_alias = ''
command = "drush_" + command_suff
if typeof allowed_commands[command] is "function"
return (
cmnd: command
alias: site_alias
args: extra_args
# BEGIN public facing methods
# The main method, fire this when we receive a "drush " command.
execute: (msg) ->
command = parse_command(msg.match[1])
unless command is `undefined`
allowed_commands[command.cmnd](msg, command)
msg.send "'drush " + msg.match[1] + "' is and invalid command. Please try again."
# Instantiate the drush interface
drush = drush_interface()
# Hook in with hobot
module.exports = (robot) ->
robot.respond /drush (.*)$/i, (msg) ->